We each have a unique genetic (基因的,遗传的) make-up. Every cell of your body has the same set of about 100,000 separate genes made of DNA. These are the instructions for producing a person. Genes decide everything from the colour of your skin to the way your brain works. You have one of several billion combinations of DNA which come from the random mixing of your parents’ genes. Except for identical twins (同卵双胞胎), no one has the same combination as another person. You are unique! You are unique in another way too: in the way you are raised and all the experiences you have from before birth to adult life. These experiences influence you, your behaviour and attitudes, and the choices you make.
But are genes or life experiences more important in shaping your appearance and personality? Scientists are studying twins to find out. One set of twins occurs every 70 births---some are identical and others are non-identical twins. Identical twins are special because they share exactly the same genes and often the same environment. Non-identical twins are more like ordinary brothers and sisters.
Some identical twins have been adopted and brought up in different homes. With identical genes but a different home environment, scientists can study twins to see how much a particular feature depends on the genes we inherit. For example, we know that eye problems, like short-sightedness, are mostly genetic. But resistance to pain is largely dependent on experiences. Genes also influence our eating habits. Identical twins brought up apart often like to eat at the same time of day and feel full after eating the same amount. Non-identical twins in similar circumstances have more varied eating habits. Identical twins are also more likely to follow the same patterns for marriage and divorce than non-identical twins.
Scientists are trying to identify the different genes that influence our behaviour. Some people are thrill-seekers and get into risk-taking and adventurous activities. They take up extreme sports like bungee jumping and possibly take drugs. Scientists have discovered a gene which affects this.
We could ask, “Are our lives determined by our genes or our upbringing?” Scientists are learning more all the time, but it is certainly true that both are important in making us who we are.
1.What is the main idea of the first paragraph?
A. We cannot easily change our physical appearance.
B. How we turn out depends on our parents’ genes.
C. Everyone has a physical double somewhere in the world.
D. Both our genes and our experiences make us who we are.
2.Why are scientists studying twins?
A. To find out how many twins are born every year.
B. To discover what shapes us as individuals.
C. To compare differences between twins.
D. To study brother-and-sister relationships.
3.According to the passage, __________.
A. one in 70 twins are genetically identical
B. non-identical twins are usually not of the same sex
C. twins separated at birth behave exactly the same
D. identical twins are genetically the same
4.Which of the following is most affected by experience according the passage?
A. Eating habits. B. Eye-sight. C. Pain resistance. D. Marriage patterns.
5.What does the underlined “this” in Paragraph 4 refer to?
A. Our love of sport. B. Our attitude to risk-taking.
C. Our skill at bungee jumping. D. Our ability to take drugs.
高二英语阅读理解中等难度题
We each have a unique genetic (基因的,遗传的) make-up. Every cell of your body has the same set of about 100,000 separate genes made of DNA. These are the instructions for producing a person. Genes decide everything from the colour of your skin to the way your brain works. You have one of several billion combinations of DNA which come from the random mixing of your parents’ genes. Except for identical twins (同卵双胞胎), no one has the same combination as another person. You are unique! You are unique in another way too: in the way you are raised and all the experiences you have from before birth to adult life. These experiences influence you, your behaviour and attitudes, and the choices you make.
But are genes or life experiences more important in shaping your appearance and personality? Scientists are studying twins to find out. One set of twins occurs every 70 births---some are identical and others are non-identical twins. Identical twins are special because they share exactly the same genes and often the same environment. Non-identical twins are more like ordinary brothers and sisters.
Some identical twins have been adopted and brought up in different homes. With identical genes but a different home environment, scientists can study twins to see how much a particular feature depends on the genes we inherit. For example, we know that eye problems, like short-sightedness, are mostly genetic. But resistance to pain is largely dependent on experiences. Genes also influence our eating habits. Identical twins brought up apart often like to eat at the same time of day and feel full after eating the same amount. Non-identical twins in similar circumstances have more varied eating habits. Identical twins are also more likely to follow the same patterns for marriage and divorce than non-identical twins.
Scientists are trying to identify the different genes that influence our behaviour. Some people are thrill-seekers and get into risk-taking and adventurous activities. They take up extreme sports like bungee jumping and possibly take drugs. Scientists have discovered a gene which affects this.
We could ask, “Are our lives determined by our genes or our upbringing?” Scientists are learning more all the time, but it is certainly true that both are important in making us who we are.
1.What is the main idea of the first paragraph?
A. We cannot easily change our physical appearance.
B. How we turn out depends on our parents’ genes.
C. Everyone has a physical double somewhere in the world.
D. Both our genes and our experiences make us who we are.
2.Why are scientists studying twins?
A. To find out how many twins are born every year.
B. To discover what shapes us as individuals.
C. To compare differences between twins.
D. To study brother-and-sister relationships.
3.According to the passage, __________.
A. one in 70 twins are genetically identical
B. non-identical twins are usually not of the same sex
C. twins separated at birth behave exactly the same
D. identical twins are genetically the same
4.Which of the following is most affected by experience according the passage?
A. Eating habits. B. Eye-sight. C. Pain resistance. D. Marriage patterns.
5.What does the underlined “this” in Paragraph 4 refer to?
A. Our love of sport. B. Our attitude to risk-taking.
C. Our skill at bungee jumping. D. Our ability to take drugs.
高二英语阅读理解中等难度题查看答案及解析
Time is valuable. We have to _____ every minute of each day.
A. assess B. reserve C. appreciate D. approach
高二英语单项填空中等难度题查看答案及解析
Each member has his advantages, but if we work together, we can produce something new, unique and to that of any one member.
A. superb B. superior C. senior D. super
高二英语单项填空中等难度题查看答案及解析
We often talk about ourselves as if we have permanent genetic defects (缺陷) that can never be changed. “I’m impatient.” “I’m always behind.” “I always put things ______!” You’ve surely heard them. Maybe you’ve used them to describe ______.
These comments may come from stories about us that have been _____ for years—often from ______ childhood. These stories may have no ______ in fact. But they can set low expectations for us. As a child, my mother said to me, “Marshall, you have no mechanical (操作机械的) skills, and you will never have any mechanical skills for the rest of your life.” How did these expectations ______ my development? I was never ______ to work on cars or be around ______. When I was 18, I took the US Army’s Mechanical Aptitude Test. My scores were in the bottom for the entire nation!
Six years later, ______, I was at California University, working on my doctor’s degree. One of my professors,Dr. Bob Tannbaum, asked me to write down things I did well and things I couldn’t do. On the positive side, I ______ down, “research, writing, analysis, and speaking.” On the ______ side, I wrote, “I have no Mechanical skills.”
Bob asked me how I knew I had no mechanical skills. I explained my life ______ and told him about my ______ performance on the Army test. Bob then asked, “______ is it that you can solve complex mathematical problems, but you can’t solve ______ mechanical problems?”
Suddenly I realized that I didn’t ______ from some sort of genetic defect. I was just living out expectations that I had chosen to ______. At that point, it wasn’t just my family and friends who had been ______ my belief that I was mechanically hopeless. And it wasn’t just the Army test, either. I was the one who kept telling myself, “You can’t do this!” I realized that as long as I kept saying that, it was going to remain true. ______ , if we don’t treat ourselves as if we have incurable genetic defects, we can do well in almost ______ we choose.
1.A. off B. away C. up D. down
2.A. them B. myself C. others D. yourself
3.A. said B. spoken C. repeated D. spread
4.A. as far back as B. as long as C. as well as D. as much as
5.A. plot B. basis C. cause D. meaning
6.A. lead B. improve C. inspire D. affect
7.A. agreed B. forbidden C. hoped D. encouraged
8.A. means B. equipments C. tools D. hammers
9.A. however B. therefore C. somehow D. instead
10.A. calmed B. took C. laid D. got
11.A. passive B. negative C. active D. subjective
12.A. roads B. trips C. experiences D. paths
13.A. unexpected B. excellent C. poor D. average
14.A. Why B. What C. How D. When
15.A. hard B. advanced C. usual D. simple
16.A. arise B. suffer C. separate D. come
17.A. receive B. suspect C. adapt D. believe
18.A. strengthening B. weakening C. disliking D. accepting
19.A. As a result B. On the contrary C. In addition D. At the same time
20.A. nothing B. something C. anything D. little
高二英语完形填空中等难度题查看答案及解析
Genetically modified (转基因 ) foods have become a focus point of agriculture throughout the news today. This has an effect on many different aspects of the agriculture world. From the seed dealer, to the farmer that buys the seed, to the workers that the farmer sells to; all are affected by the new technologies that are involved in this part of production agriculture.
Genetically modified foods have come under heavy fire lately. There are some countries that are against buying these types of foods. They are tested for safety by the best scientific experts in Europe, the US and the rest of the world. They are not for sale until they have gone through this complete safety process. Since they are a new product, and any slight problem with them could affect a whole country, these tests are very necessary.
These safety tests are carried out because of the new rules that were made with the Novel Foods Regulation. Begun in May of 1997, the Novel Foods Regulation set up an EU-wide pre-market system for all novel foods. A novel food is described as one that has not been eaten by EU consumers widely in the past. By setting up this program the EU hopes to keep its consumers safe from any possible side effects of any new food products.
There are a variety of ways in which genetic modification has helped food producers. They can improve the nutritional (营养的) value or the storage conditions of the food. Today there are only two genetically modified foods that have been allowed for use, these are GM soybean and GM maize.
Despite any safety checks, many people are still cautious about eating genetically modified foods. By providing these people with the necessary information, we can allow them to make decisions about these foods.
1.What do we know about the novel food?
A. It’s very popular in EU.
B. It’s bad for people’s health.
C. It’s a new kind of food.
D. Its story has been published.
2.Genetically foods are allowed to be sold if they are .
A. tested for safety
B. of high quality
C. more nutritional
D. grown in Europe
3.From paragraph 2, we can learn that genetically modified foods .
A. do no harm to people
B. have caused some problems
C. are well received after being tested
D. are criticized and attacked by many people
4.What’s the writer’s attitude towards genetically modified foods?
A. We should warn people that they are too dangerous to be eaten.
B. We should give people information about them so that they can decide whether to buy them
C. We should encourage people to eat them because they are more nutritional.
D. We should tell people that they are trying to fool the farmers.
高二英语阅读理解中等难度题查看答案及解析
Today’s workplace is unique in history. Never before have we seen people working together who represent such different backgrounds and experiences. This difference of age, race, gender, and work style makes it very difficult to organize and run a company.
As a result, companies are looking for individuals who can manage a wide range of employees effectively. Increasingly, managers are discovering that age differences among workers are a major cause of concern.
This has been an important realization. The management difficulties and challenges have led some experts to study intergenerational differences for an understanding of problems in the workplace. What they have discovered is interesting and may provide ways of improving working conditions in companies that employ individuals from different generations.
The first thing to realize, they say, is that differences of opinion about the importance of work and how to get work done are not a coincidence. That is, it is not an accident that young employees will be different from older employees. In fact, if employers do not pay attention to these differences, it is possible that anger will build up between people and lead to difficulties in the company.
Resentment (仇恨) between members of different generations, if not attended to, can lead to extreme anger and unhappiness and even lasting enmity if people are not careful. That individuals from different generations should come to view each other as if they were from different sides of warring countries should not be surprising.
It is natural for individuals from the same generation to form alliances (联盟), to come together for protection. Different generations represent different experiences in life, and these lead naturally to different opinions about oneself and one’s approaches to work.
If you were raised in a time of plenty, when products were readily available and relatively inexpensive, you would believe that prosperity is natural and expectable. If, on the other hand, you were raised in a time of scarcity, you would always be careful not to waste things for fear you would not have enough. You would make angry people who seem to believe that problems will always solve themselves. Such optimism in the face of difficulties would be a source of unhappiness between you and them. It is difficult, in such circumstances, to achieve a happy, agreeable atmosphere in the workplace.
1.According to the experts, employers should realize ______ if they want to avoid anger between employees.
A. the different understanding of problems in the workplace
B. the different views on value of work and working methods
C. the different genders of employees in the workplace
D. the different ways of expressing anger in the company
2.The word “enmity” is closet in meaning to ______.
A. hatred B. sorrows
C. ignorance D. forgiveness
3.What can be inferred from the passage?
A. Employees in some companies regard each other as mere enemies.
B. Employees’ attitudes towards life are related to the time when they grow up.
C. Employees who are raised in a time of scarcity tend to be angry with others.
D. Achieving a harmonious atmosphere in the workplace is the main task for employers.
4.What does the writer mainly talk about in the passage?
A. Employees should be cooperative and friendly with each other.
B. It is difficult for employers to have workers work in a friendly way.
C. The weakness of human nature causes the anger between employees.
D. The generational differences cause the disharmony among employees.
高二英语阅读理解困难题查看答案及解析
Today's workplace is unique in history.Never before have we seen people working together who represent such different backgrounds and experiences.This difference of age,race,gender,and work style makes it very difficult to organize and run a company.
As a result,companies are looking for individuals who can manage a wide range of employees effectively. Increasingly,managers are discovering that age differences among workers are a major cause of concern.
This has been an important realization.The management difficulties and challenges have led some experts to study intergenerational differences for an understanding of problems in the workplace.What they have discovered is interesting and may provide ways of improving working conditions in companies that employ individuals from different generations.
The first thing to realize,they say,is that differences of opinion about the importance of work and how to get work done are not a coincidence.That is,it is not an accident that young employees will be different from older employees.In fact,if employers do not pay attention to these differences,it is possible that anger will build up between people and lead to difficulties in the company.
Resentment(仇恨)between members of different generations,if not attended to(处理),can lead to extreme anger and unhappiness and even lasting enmity if people are not careful.That individuals from different generations should come to view each other as if they were from different sides of warring countries should not be surprising.
It is natural for individuals from the same generation to form alliances(联盟),to come together for protection. Different generations represent different experiences in life,and these lead naturally to different opinions about oneself and one's approaches to work.
If you were raised in a time of plenty,when products were readily available and relatively inexpensive,you would believe that prosperity is natural and expectable.If,on the other hand,you were raised in a time of scarcity,you would always be careful not to waste things for fear you would not have enough.You would make angry people who seem to believe that problems will always solve themselves.Such optimism in the face of difficulties would be a source of unhappiness between you and them.It is difficult,in such circumstances,to achieve a happy,agreeable atmosphere in the workplace.
1.What most possibly makes it difficult to organize or run a company?
A. Employees work in different styles.
B. Employees are in different races.
C. Employees are in different generations.
D. Employees are of different backgrounds.
2.Employers should pay attention to_______if they want to avoid anger between employees.
A. the different generations of employees in the workplace
B. the different views on value of work and working methods
C. the different understanding of problems in the workplace
D. the different ways of expressing anger in the company
3.The word underlined "enmity" is closet in meaning to_____.
A. forgiveness B. sorrows
C. ignorance D. hatred
4.What does the writer mainly talk about in the passage?
A. The generational differences cause the disharmony among employees.
B. It is difficult for employers to have workers work in a friendly way.
C. The weakness of human nature causes the anger between employees.
D. Employees should be cooperative and friendly with each other.
高二英语阅读理解中等难度题查看答案及解析
—Has every student passed the final exam?
—No. Unfortunately, _______ three from each class have failed.
A. no more than B. at least
C. not in the least D. at most
高二英语单项填空困难题查看答案及解析
We each have a memory. That’s why we can still remember things after a long time. Some people have very good memories and they can easily learn many things by heart, but some people can only remember things when they say or do them again and again. Many of the great men of the world have got surprising memories.
A good memory is a great help in learning a language. Everybody learns his mother language when he is a small child. He hears the sounds, remembers them and then he learns to speak. Some children are living with their parents in foreign countries. They can learn two languages as easily as one because they hear, remember and speak two languages every day. In school it is not so easy to learn a foreign language because the pupils have so little time for it, and they are busy with other subjects, too.
But your memory will become better and better when you do more and more exercises.
1. Some people can easily learn many things by heart because ________.
A.they always sleep very well B.they often eat good food
C.they read a lot of books D.they have very good memories
2. Before a child can speak, he must ________.
A.read and write B.make sentences
C.hear and remember the sounds D.think hard
3. In school the pupils can’t learn a foreign language well because________ .
A.they have no good memories B.they have no recorders
C.they have too much time for it D.they are busy with other subjects
4. Your memory will become better and better ________.
A.if you have plenty of good food
B.if you do more and more exercises
C.if you do morning exercises every day
D.if you get up early
高二英语阅读理解简单题查看答案及解析
We each have a memory. That’s why we can still remember things after a long time. Some people have very good memories and they can easily learn many things by heart, but some people can only remember things when they say or do them again and again. Many of the great men of the world have got surprising memories.
A good memory is a great help in learning a language. Everybody learns his mother language when he is a small child. He hears the sounds, remembers them and then he learns to speak. Some children are living with their parents in foreign countries. They can learn two languages as easily as one because they hear, remember and speak two languages every day. In school it is not so easy to learn a foreign language because the pupils have so little time for it, and they are busy with other subjects, too.
But your memory will become better and better when you do more and more exercises.
1.Some people can easily learn many things by heart because .
A.they always sleep very well
B.they often eat good food
C.they have very good memories
D.they read a lot of books
2.In school the pupils can’t learn a foreign language well because .
A.they have no good memories
B.they have no recorders
C.they have too much time for it
D.they are busy with other subjects
3.Your memory will become better and better .
A.if you do more and more exercises
B.if you have plenty of good food
C.if you do morning exercises every day
D.if you get up early
高二英语阅读理解简单题查看答案及解析